Improvement in felts for paper machinery



E. B. HAYDEN. Felt for Paper Machinery.

Patented Dec. 9', 1879.

m 7T n m I VVYEZ IZGGSGS N-FETm FHOTO-UTHOGRAPMER WASHINGTON. D C

UNITED STATES PATENT OFFICE.

EDWARD B. HAYDEN, OF PLYMOUTH, MASSAoHUS-ETTS.

.IMPROVEMENT IN FELTS FOR PAPER MACHINEFRYQ f Specification forming part ofLetters Patent No. 222,353, dated December 9, 1879; application filed November 10, 1879.

- being dried.

The purpose ofv my invention is to provide a drier-felt which, while being sufficiently firm and strong to meet all requirements, shall be lighter, more pliable, and more porous-essential qualities in a drier-felt. My irwention consists in a drier-felt composed of a woven fabric the woof of which, or both woof and warp, is formed of rovings, as

. distinguished from the spun and twisted yarns which are now universally used in fabrics of this character.

The drawing accompanying this specification represents in perspective a portion of a paper-making machine embodying my invention.

In said drawing I have shown a stack of rotary drier-cylinders of a Fourdrinier papermachine at A A, &c., as mounted, inthe usual manner, in suitable housings B B, 'while the drier-felt is shown at O as passing about the cylinders A A, also in the usual manner.

In carrying out my invention I weave a web for the drier-felt in which the woof, or both woof and warp, are composed of rovings, in lieu of spun and twisted yarns or threads.

The rovings, as compared with spun and twisted yarns, are porous or loose in texture; hence the web in which they are incorporated is comparatively pliable and porous-qualities which enable it to dry rapidly and render it less liable to break or crack. 7

I lessen the cost of the product for the reason that I avoid, wholly or in part, the expense of spinning, spoo1ing,and twisting the yarns, which is a matter of considerable moment. I

I claim- A drier-felt, so called, for paper-making machinery, the woof, or both woof and warp, of which is composed of rovin gs, as distinguished from spun and twisted yarns or threads.-

EDWD. B. HAYDEN.

Witnesses:

A. G. HAYDEN, S. A. HAYDEN, F. CURTIS. 

